"Book two tickets to Johannesburg in our premium economy cabin (World Traveller Plus), travelling between 1 and 31 March 2019 or between 1 May and 31 December 2019, and receive two tickets for the price of one. Tickets must be bought at the same time, and both tickets should have same travel dates."
One person return prem Econ comes out at £675. Does that mean it's buy one get one free? so two people in prem econ for £675 or £337.50 each? Am I being daft?